Suppose two point charges q and Q are held at distance d and D above an infinite grounded conducting plane (see the Fig. below) where D > d and q = Q. A. Find the potential in the region above the plane using method of images subject to the following boundary conditions: 1. V = 0 when z = 0 2. V⟶ 0 far from the charge B. Find the force of attraction between the original and the induced image charges also how much Energy all charges will possess in the presence of conductor?

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Subject: Electrmagnetics A capacitor consists of three concentric spherical shells with radii R, 2R, and 3R. The inner and outer shells are connected by a wire so they are at the same potential. The shells start neutral, and then a battery transfers charge from the middle shell to the inner and outer shells.a. If the final charge on the middle shell is -Q, what are the charges on the inner and outer shells? Your answer should be a function of Q.b. Determine the electrostatic energy of this system in terms of Q.